Questions tagged [everyday-chemistry]

Applications of chemistry to reagents, reactions and processes of everyday life. Use this tag for question on chemistry in an out-of-laboratory/class context. DO NOT use this tag merely because the question is about simple chemistry.

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Is propanol 1-2 diol 178 the same as propylene glycol?

I clean vinyl records in an ultrasonic vinyl record cleaning machine the manual states it uses propanol 1-2 diol 178 as a surfactant. I think this is the same chemical as propylene glycol. Is it? ...
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55 views

Safe, low maintenance, versatile methods for electro-etching steel?

I'm experimenting with electro-etching steel. I'd like to mask off a small area (e.g. text or logo with exposed area of about 2cm x 2cm) on a steel sheet, and etch about 1mm deep. I'm trying to find a ...
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Differences Between RainX and RainX Anti-Fog? [on hold]

I have a question pertaining to chemistry in a practical way. As I was unable to find a more suitable community to ask, I shall ask it here. RainX, as you may already know, is a compound applied to ...
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21 views

Is the volume of a pure liquid the same as the volume of the solution when a solute is dissolved in that pure liquid? Explain on a molecular level [on hold]

''' Can someone explain on the molecular level whether or not the volume of a pure substance is the same even after a solute has been added to it? '''
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Smoky lights at events - Piped in or a chemistry reaction of some kind?

Was at Dreamhack MTL this weekend and realised that in the whole venue there seems to be just a little bit of smoke in the spotlights and other light sources. You also see that kind of smoke in shows ...
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30 views

How can I paint the surface of a silicone? [closed]

Suppose we have a hole in a pure silicone with hole diameter 0.3 mm and the height of the hole in the silicone is 3 mm, it looks like an empty thin cylinder within the silicone. I need to paint the ...
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1answer
1k views

Making artificial sweat

I'm currently working on a chemistry investigation wherein I need to dilute a compound with artificial sweat. I have looked at various forums, including this, which gave answers, but is very outdated. ...
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Question related to inflammables [closed]

Some chemicals spontaneously burst to flames when they come in contact with air or water. What class of chemicals can increase such flames? (provide one word to describe them: adjective or a singular ...
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Calculating percent abundance [closed]

The below question was taken from my OpenStax text. I understand the general idea of how to solve, but am having trouble with the step from equation (1) to equation (2). Calculation of Percent ...
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1answer
48k views

Chemicals to clean natural stones

I picked up some stones from a hiking trip. What can I use to thoroughly clean the mud and other hard deposits on the surface of the stones? I have only washed them with plain water.
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Sacrificial Anodes

Sacrificial anodes prevent less active metals from oxidising by giving away their electrons instead. Now, I observed that these anodes are used on ships, pipes, water tanks etc., but nothing that does ...
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1answer
42 views

Will charcoal briquettes (not activated) absorb water out of the air in the house in a subtropical climate?

I live in Florida, an incredibly wet environment where it's very difficult to get moisture out of house without using a dehumidifier 24/7, which is too expensive. Would charcoal briquettes be of any ...
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1answer
38 views

Why does boiled water have a different taste as compared to cool water? [closed]

I have noticed it frequently and decided to check with some of my peers and friends about this and they too have felt such a thing. The taste comparison occurs after the boiled water is cooled down to ...
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24 views

Electrolytes for Anodization at Home

I'm looking into anodization, and all the people doing it seem to have sulfuric acid as their first choice electrolyte, while others use sodium metabisulfate. Having simple access to exactly neither ...
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2answers
54 views

Simple every-day-item hydrometer for distinguishing regular soda and diet sodas

When ordering a diet soda (no sugar soda) in a cafe or restaurant I would like to be sure I am getting a diet soda and not a regular sugar-infested soda. Because a regular soda, is through all the ...
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What is responsible for the odor of gasoline?

Gasoline as we know it is a blend of combustible hydrocarbons and has a characteristic odor. The natural gas we use to heat our homes and (for some of us) cook our food has its own odor, except... ...
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3answers
2k views

Could I settile for galvanized steel over stainless for salt corrosion resistance?

Bear with me, I'll get to the chemistry soon. I have a float tank that I want to attach a skimmer to. Unfortunately, the enclosure is weakened by cutting a hole out of the ABS plastic. The weight ...
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1answer
56 views

Isotopes and elements [closed]

this is a gold bar. If we look at its structure, will we see that there are atoms that have a different number of neutrons (aka isotopes) (as far as I'm concerned, an isotope is an atom with a ...
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4answers
541 views

accurate measurement from inaccurate tools [closed]

It is a very general question. Is there a good way to systematically increase the accuracy and precision of a measuring tool using only mathematical means? For example, average 10 measurements can ...
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33 views

Why chemicals bottles (plastic) have paper seals?

I have my film developer and fixer in the plastic bottles, also I have glycerine and propylene glycol. They all have paper seals (in caps) that those chemicals get wet and destroy - they just fell ...
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3answers
66 views

Was it CO2 or Muriatic Acid?

We had a malfunction with the chlorination system at our pool. There was a reaction between the Calcium Hypochlorite tablets and either $\ce{CO2}$, Carbonic Acid, or Muriatic Acid. There was a ...
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anionic surfactants as salt water induced rust inhibitors

There are a multitude of product that purport to protect boat engines from the adverse effects of salt water. These anionic surfactants claim to rinse away salt buildup. I do not understand how a ...
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Are the elements kinds of atoms? [duplicate]

There's a lot of atoms. There are 112 Elements, which i think are kinds of atoms. So if we say that it's an atom of lithium, we mean that lithium is a kind of atoms and this atom has the structure of ...
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1answer
835 views

Solvents adequate for dissolving overheated polyethylene terephthalate glycol-modified (PETG) residue?

I work in 3D printing. One of the materials we use is polyethylene terephthalate glycol-modified, or PETG. It is a pretty good material, both in strength and appearance. It is melted and pushed ...
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1answer
7k views

What is the formula of bleaching powder?

What is the structure and preparation for bleaching powder? Why there is a controversy in the formula of bleaching powder? I have encountered many forms of the formula of bleaching powder, like $\...
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19 views

Supplement weight by element or compound

When a vitamin or supplement claims, for example, that it contains 600 mg of calcium (as calcium carbonate) what does that mean? Does each tablet contain 600 milligrams of the element calcium? Or ...
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1answer
2k views

Will adding apple cider vinegar to freshly pressed fruit juice preserve it

Would adding apple cider vinegar to freshly cold pressed fruit juice be able to preserve the fruit juice and extend its shelf life? Would the juice change into vinegar with time?
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How to remove the foggy discoloration in polycarbonate tubes caused by acetone?

Unknowing that the tubes used in the centrifuge are made of polycarbonate, I cleaned them with acetone. Following, a white smoky discolouration appeared and the tubes turned opaque. Is there any way ...
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2answers
319 views

What fraction of the vapour in electronic cigarettes is water?

Not a chemist but looking for an answer I can understand. Electronic cigarettes use propylene glycol and/or vegetable glycerin as a base liquid. This is heated and vaporized at a low temperature (my ...
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2answers
58 views

Materials used in cooktop heating element, and reason for black appearance

I have been interested in the structure of heating elements/coils used in cooktops. I am referring to something such as in the following picture: I have a cooktop at home with such elements, and at ...
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1answer
29 views

Emulsifier for water, been oil [closed]

I am trying to blend neem oil and water and I'm wondering what the best emulsifier would be 10% neem oil 90% water thank you
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3answers
6k views

Why does chocolate melt so easily?

(Yes, I know the question sounds super-trivial... but bear with me here) Most chocolates (especially milk-chocolate) tend to melt into this sticky (albeit delicious) mess at temperatures slightly ...
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1answer
164 views

Is the flint used in disposable lighters toxic?

Especially the sparks that result when using them. I heard this from a friend and can't seem to find an answer on Google.
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4answers
5k views

Sensitive test for lead in water?

Some of my friends are in Flint and I'm horrified by their situation. I would like to learn how to test for lead independently. After all if you can't trust the state sending them water to test is ...
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3answers
4k views

Why is it considered acid rain with pH <5.6?

I recently read in a book that rain is considered acid rain if the pH falls below 5.6. However a substance is acidic when the pH is below 7; so why is the boundary for acid rain 5.6? I was thinking ...
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1answer
9k views

Using table salt as a way to limit humidity in an unoccupied house

We own a static caravan in the UK (Snowdonia region, so rainy and wet all year round, moderately cold winters) and we leave it unoccupied during Winter (Oct-Feb). We were advised of an apparently ...
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6answers
5k views

Un-denaturing industrial alcohol

I have a question regarding the denaturation of industrial ethanol with methanol to discourage its consumption. The boiling point of methanol is 64.7 °C, while the boiling point of ethanol is 78.37 °...
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1answer
8k views

Why does steel wool catch fire when rubbed with a battery?

I was watching an episode of Man vs Wild where steel wool was rubbed with phone battery. To my surprise, the wool caught fire. What is the reason for this?
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1answer
458 views

To extend the life of a cartridge razor blade, should the blade be stored in oil or alcohol?

I've read varied recommendations about extending the life of a razor blade. Some say should stick the blade in oil when not in use, others say in alcohol, others say in a bowl of rice or silica gel. ...
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1answer
123 views

What chemicals cause the softer, less-raw taste of purified water sold in bottles?

I've seen the post, "What defines an element's taste?", but it doesn't answer my question. I took water that is supplied by the municipality corporation and put it through a gravity based water ...
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8answers
46k views

Is toothpaste solid or liquid?

My teacher didn't answer this properly: Is toothpaste solid or liquid? You can't say toothpaste is a solid because solid material have a fixed shape but toothpaste doesn't. However, you can't say ...
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1answer
52 views

Reaction of sulphur with calcium carbonate

Can sulphur react with calcium carbonate to form sulphur trioxide and calcium carbide, as the energy of 3(S=O) is greater than ((C=O) +2(C-O))? EDIT: i forgot to say that this is in an oxygen-free ...
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1answer
35 views

Dissolvant for the black spots around the rear mirror of the front window of my car

I make pictures for Mapillary. I would like to place my dashcam as high as possible, but those black spots get in the way. Scraping them off does not work. But I can feel their relief. If no one has ...
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1answer
28 views

What ratio of bicarb to sugarcane juice with a pH level of 4.5-5.5 to neutralize pH level? [closed]

I am thinking of adding baking soda to sugarcane juice to eliminate the fruity acid that is present. The pH of sugarcane juice ranges from 4.5-5.5. I wonder how much baking soda should I incorporate ...
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1answer
72 views

Producing soap from sodium carbonate and oil

Can we get soap by mixing $\ce{Na2CO3}$ from seaweeds with oil? I am not good at chemistry and saw this in an anime Dr. Stone, so I just wanted to know if it is true or not.
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Non-chlorine bleach vs. hydrogen peroxide 3% soln from pharmacy: Disinfecting gravity water filter system

I'm seeking to disinfect a Platypus gravity water filter made with hollow fibers. My main concern is to address any mold / mildew that may have developed inside the hollow fiber filter due to long ...
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0answers
22 views

what does the mixture between urine and dishwater cause? [closed]

I have built an rv from a short school bus. I ran a hose from the "toilet" to a tank in the back to drain the toilet. We wash our dishes in a basin on the counter and dump the dishwater into the ...
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1answer
43 views

Reverse washing soda buildup on stainless steel

In a home brewing project, I use washing soda (Na2CO3) to remove labels and glue from previously used bottles. In doing this, my flip-top bottles (which have a stainless steel flip top arm) often get ...
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0answers
50 views

Are there any gases that can not be turned into liquid, or liquids that can not be frozen solid?

My son points out that some solids can not be melted (because they combust, for example). He wonders if there are any liquids that can not be frozen, or gases that can not be liquified.